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client_format.go
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client_format.go
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package gortsplib
import (
"time"
"github.com/pion/rtcp"
"github.com/pion/rtp"
"github.com/bass3m/gortsplib/pkg/format"
"github.com/bass3m/gortsplib/pkg/liberrors"
"github.com/bass3m/gortsplib/pkg/rtcpreceiver"
"github.com/bass3m/gortsplib/pkg/rtcpsender"
"github.com/bass3m/gortsplib/pkg/rtplossdetector"
"github.com/bass3m/gortsplib/pkg/rtpreorderer"
)
type clientFormat struct {
cm *clientMedia
format format.Format
udpReorderer *rtpreorderer.Reorderer // play
tcpLossDetector *rtplossdetector.LossDetector // play
rtcpReceiver *rtcpreceiver.RTCPReceiver // play
rtcpSender *rtcpsender.RTCPSender // record
onPacketRTP OnPacketRTPFunc
}
func newClientFormat(cm *clientMedia, forma format.Format) *clientFormat {
return &clientFormat{
cm: cm,
format: forma,
onPacketRTP: func(*rtp.Packet) {},
}
}
func (ct *clientFormat) start() {
if ct.cm.c.state == clientStatePlay {
if ct.cm.udpRTPListener != nil {
ct.udpReorderer = rtpreorderer.New()
} else {
ct.tcpLossDetector = rtplossdetector.New()
}
var err error
ct.rtcpReceiver, err = rtcpreceiver.New(
ct.format.ClockRate(),
nil,
ct.cm.c.receiverReportPeriod,
ct.cm.c.timeNow,
func(pkt rtcp.Packet) {
if ct.cm.udpRTPListener != nil {
ct.cm.c.WritePacketRTCP(ct.cm.media, pkt) //nolint:errcheck
}
})
if err != nil {
panic(err)
}
} else {
ct.rtcpSender = rtcpsender.New(
ct.format.ClockRate(),
ct.cm.c.senderReportPeriod,
ct.cm.c.timeNow,
func(pkt rtcp.Packet) {
if !ct.cm.c.DisableRTCPSenderReports {
ct.cm.c.WritePacketRTCP(ct.cm.media, pkt) //nolint:errcheck
}
})
}
}
func (ct *clientFormat) stop() {
if ct.rtcpReceiver != nil {
ct.rtcpReceiver.Close()
ct.rtcpReceiver = nil
}
if ct.rtcpSender != nil {
ct.rtcpSender.Close()
}
}
func (ct *clientFormat) writePacketRTP(byts []byte, pkt *rtp.Packet, ntp time.Time) error {
ct.rtcpSender.ProcessPacket(pkt, ntp, ct.format.PTSEqualsDTS(pkt))
ok := ct.cm.c.writer.push(func() {
ct.cm.writePacketRTPInQueue(byts)
})
if !ok {
return liberrors.ErrClientWriteQueueFull{}
}
return nil
}
func (ct *clientFormat) readRTPUDP(pkt *rtp.Packet) {
packets, lost := ct.udpReorderer.Process(pkt)
if lost != 0 {
ct.cm.c.OnPacketLost(liberrors.ErrClientRTPPacketsLost{Lost: lost})
// do not return
}
now := ct.cm.c.timeNow()
for _, pkt := range packets {
err := ct.rtcpReceiver.ProcessPacket(pkt, now, ct.format.PTSEqualsDTS(pkt))
if err != nil {
ct.cm.c.OnDecodeError(err)
continue
}
ct.onPacketRTP(pkt)
}
}
func (ct *clientFormat) readRTPTCP(pkt *rtp.Packet) {
lost := ct.tcpLossDetector.Process(pkt)
if lost != 0 {
ct.cm.c.OnPacketLost(liberrors.ErrClientRTPPacketsLost{Lost: lost})
// do not return
}
now := ct.cm.c.timeNow()
err := ct.rtcpReceiver.ProcessPacket(pkt, now, ct.format.PTSEqualsDTS(pkt))
if err != nil {
ct.cm.c.OnDecodeError(err)
return
}
ct.onPacketRTP(pkt)
}